321312002201 has 4 divisors (see below), whose sum is σ = 326757968400. Its totient is φ = 315866036004.

The previous prime is 321312002191. The next prime is 321312002203. The reversal of 321312002201 is 102200213123.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 102200213123 = 1069 ⋅95603567.

It is a cyclic number.

It is not a de Polignac number, because 321312002201 - 2¹⁰ = 321312001177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 321312002201.

It is not an unprimeable number, because it can be changed into a prime (321312002203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2722983011 + ... + 2722983128.

It is an arithmetic number, because the mean of its divisors is an integer number (81689492100).

Almost surely, 2^321312002201 is an apocalyptic number.

It is an amenable number.

321312002201 is a deficient number, since it is larger than the sum of its proper divisors (5445966199).

321312002201 is an equidigital number, since it uses as much as digits as its factorization.

321312002201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5445966198.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 321312002201 its reverse (102200213123), we get a palindrome (423512215324).

The spelling of 321312002201 in words is "three hundred twenty-one billion, three hundred twelve million, two thousand, two hundred one".